赵丽颖真实肚子疼视频,美女视频全是免费的

網(wǎng)站HTML靜態(tài)化解決方案

dandebin >《電腦技巧》

2010.02.26

關(guān)注

最近在做一個項目，其中一部分的訪問頻率較高但內(nèi)容變動較小。所以使用網(wǎng)站HTML靜態(tài)化方案來優(yōu)化訪問速度

當(dāng)一個Servlet資源請求到達WEB服務(wù)器之后我們會填充指定的JSP頁面來響應(yīng)請求:

HTTP請求---Web服務(wù)器---Servlet--業(yè)務(wù)邏輯處理--訪問數(shù)據(jù)--填充JSP--響應(yīng)請求

HTML靜態(tài)化之后:

HTTP請求---Web服務(wù)器---Servlet--HTML--響應(yīng)請求

嘿嘿，是不是很爽？省去了業(yè)務(wù)邏輯處理和數(shù)據(jù)抓取直接響應(yīng)。

Servlet:

view plain copy to clipboard print ?

public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
if(request.getParameter("chapterId") != null){
String chapterFileName = "bookChapterRead_"+request.getParameter("chapterId")+".html";
String chapterFilePath = getServletContext().getRealPath("/") + chapterFileName;
File chapterFile = new File(chapterFilePath);
if(chapterFile.exists()){response.sendRedirect(chapterFileName);return;}//如果有這個文件就告訴瀏覽器轉(zhuǎn)向
INovelChapterBiz novelChapterBiz = new NovelChapterBizImpl();
NovelChapter novelChapter = novelChapterBiz.searchNovelChapterById(Integer.parseInt(request.getParameter("chapterId")));//章節(jié)信息
int lastPageId = novelChapterBiz.searchLastCHapterId(novelChapter.getNovelId().getId(), novelChapter.getId());
int nextPageId = novelChapterBiz.searchNextChapterId(novelChapter.getNovelId().getId(), novelChapter.getId());
request.setAttribute("novelChapter", novelChapter);
request.setAttribute("lastPageId", lastPageId);
request.setAttribute("nextPageId", nextPageId);
new CreateStaticHTMLPage().createStaticHTMLPage(request, response, getServletContext(),
chapterFileName, chapterFilePath, "/bookRead.jsp");
}
}

public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {if(request.getParameter("chapterId") != null){String chapterFileName = "bookChapterRead_"+request.getParameter("chapterId")+".html";String chapterFilePath = getServletContext().getRealPath("/") + chapterFileName;File chapterFile = new File(chapterFilePath);if(chapterFile.exists()){response.sendRedirect(chapterFileName);return;}//如果有這個文件就告訴瀏覽器轉(zhuǎn)向INovelChapterBiz novelChapterBiz = new NovelChapterBizImpl();NovelChapter novelChapter = novelChapterBiz.searchNovelChapterById(Integer.parseInt(request.getParameter("chapterId")));//章節(jié)信息int lastPageId = novelChapterBiz.searchLastCHapterId(novelChapter.getNovelId().getId(), novelChapter.getId());int nextPageId = novelChapterBiz.searchNextChapterId(novelChapter.getNovelId().getId(), novelChapter.getId());request.setAttribute("novelChapter", novelChapter);request.setAttribute("lastPageId", lastPageId);request.setAttribute("nextPageId", nextPageId);new CreateStaticHTMLPage().createStaticHTMLPage(request, response, getServletContext(),chapterFileName, chapterFilePath, "/bookRead.jsp");}}

生成HTML靜態(tài)頁面的類:

view plain copy to clipboard print ?

package com.jb.y2t034.thefifth.web.servlet;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
/**
* 創(chuàng)建HTML靜態(tài)頁面
* 功能：創(chuàng)建HTML靜態(tài)頁面
* 時間：2009年1011日
* 地點：home
* @author mavk
*
*/
public class CreateStaticHTMLPage {
/**
* 生成靜態(tài)HTML頁面的方法
* @param request 請求對象
* @param response 響應(yīng)對象
* @param servletContext Servlet上下文
* @param fileName 文件名稱
* @param fileFullPath 文件完整路徑
* @param jspPath 需要生成靜態(tài)文件的JSP路徑(相對即可)
* @throws IOException
* @throws ServletException
*/
public void createStaticHTMLPage(HttpServletRequest request, HttpServletResponse response,ServletContext servletContext,String fileName,String fileFullPath,String jspPath) throws ServletException, IOException{
response.setContentType("text/html;charset=gb2312");//設(shè)置HTML結(jié)果流編碼(即HTML文件編碼)
RequestDispatcher rd = servletContext.getRequestDispatcher(jspPath);//得到JSP資源
final ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();//用于從ServletOutputStream中接收資源
final ServletOutputStream servletOuputStream = new ServletOutputStream(){//用于從HttpServletResponse中接收資源
public void write(byte[] b, int off,int len){
byteArrayOutputStream.write(b, off, len);
}
public void write(int b){
byteArrayOutputStream.write(b);
}
};
final PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(byteArrayOutputStream));//把轉(zhuǎn)換字節(jié)流轉(zhuǎn)換成字符流
HttpServletResponse httpServletResponse = new HttpServletResponseWrapper(response){//用于從response獲取結(jié)果流資源(重寫了兩個方法)
public ServletOutputStream getOutputStream(){
return servletOuputStream;
}
public PrintWriter getWriter(){
return printWriter;
}
};
rd.include(request, httpServletResponse);//發(fā)送結(jié)果流
printWriter.flush();//刷新緩沖區(qū)，把緩沖區(qū)的數(shù)據(jù)輸出
FileOutputStream fileOutputStream = new FileOutputStream(fileFullPath);
byteArrayOutputStream.writeTo(fileOutputStream);//把byteArrayOuputStream中的資源全部寫入到fileOuputStream中
fileOutputStream.close();//關(guān)閉輸出流，并釋放相關(guān)資源
response.sendRedirect(fileName);//發(fā)送指定文件流到客戶端
}
}

引用：http://blog.csdn.net/zjwilove4/archive/2009/10/18/4695518.aspx

本站僅提供存儲服務(wù)，所有內(nèi)容均由用戶發(fā)布，如發(fā)現(xiàn)有害或侵權(quán)內(nèi)容，請點擊舉報。

打開APP，閱讀全文并永久保存查看更多類似文章

用JSP+Servlet+JavaBean實現(xiàn)MVC設(shè)計模式的流程

html5實現(xiàn)多文件的上傳示例代碼

jsp/servlet的重定向技術(shù)綜述

jsp中forword和sendRedirect的區(qū)別

javaweb文件下載功能實現(xiàn)

Java

更多類似文章 >>

国产一级a片免费看高清,亚洲熟女中文字幕在线视频,黄三级高清在线播放,免费黄色视频在线看